CN106750794A - A kind of high molecular PTC electricity heating composite and preparation method thereof - Google Patents
A kind of high molecular PTC electricity heating composite and preparation method thereof Download PDFInfo
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- CN106750794A CN106750794A CN201611181491.XA CN201611181491A CN106750794A CN 106750794 A CN106750794 A CN 106750794A CN 201611181491 A CN201611181491 A CN 201611181491A CN 106750794 A CN106750794 A CN 106750794A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The invention discloses a kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts：Ethylene-vinyl acetate copolymer 60 70, low density polyethylene (LDPE) 80 90, graphite 20 30, p-methyl benzenesulfonic acid 1.5 1.8,2,4,6 tri-butyl-phenols 0.7 1, vermiculite power 79, polypropylene nucleater 1 1.2, Silane coupling agent KH550 35, anti-scorching agent CTP 0.3 0.5, aluminium nitride 20 30, antioxidant 1010 0.7 1, bentonite 23 30, N, N dimethylformamides 0.7 2.Present invention repeatability with relatively low room temperature resistivity, the electric conductivity of stabilization, PTC intensity higher and weaker NTC effects and preferably.
Description
Technical field
The present invention relates to a kind of composite, more particularly to a kind of electricity heating of high molecular PTC composite and its preparation side
Method.
Background technology
PTC polymer heating materials are widely used in communicating, count as overheat, overcurrent protection and temp auto-controlled heating material
In the various fields such as calculation machine, automobile, Industry Control, household electrical appliance.Current organic PTC material is due to formula and processing technology
It is unreasonable, room temperature resistance wider distribution is primarily present, the problems such as PTC intensity is small, stability is relatively low.
The content of the invention
Defect and deficiency it is an object of the invention to be directed to prior art, there is provided a kind of high molecular PTC electricity heating is compound
Material and preparation method thereof, its have relatively low room temperature resistivity, stabilization electric conductivity, weaker NTC effects and preferably
Repeatability.
To achieve the above object, the present invention uses following technical scheme.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts：Ethyl vinyl acetate second
Alkene copolymer 60-70, low density polyethylene (LDPE) 80-90, graphite 20-30, p-methyl benzenesulfonic acid 1.5-1.8,2,4,6- tri-butyl benzene
Phenol 0.7-1, vermiculite power 7-9, polypropylene nucleater 1-1.2, Silane coupling agent KH550 3-5, anti-scorching agent CTP 0.3-0.5, nitrogen
Change aluminium 20-30, antioxidant 1010 0.7-1, bentonite 23-30, DMF 0.7-2.
Further, it is made up of the raw material of following weight parts：Ethylene-vinyl acetate copolymer 65, low-density gathers
Ethene 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6- tri-butyl-phenols 0.8, vermiculite power 8, polypropylene nucleater 1.1, silicon
Alkane coupling agent KH550 4, anti-scorching agent CTP 0.4, aluminium nitride 23, antioxidant 1010 0.9, bentonite 27, N, N- dimethyl formyls
Amine 1.3.
A kind of preparation method of high molecular PTC electricity heating composite, comprises the following steps：
（1）Above-mentioned bentonite is calcined 1-2 hours at 600-670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- bis-
NMF is sufficiently mixed, and is added in the distilled water of 60-70 times of compound weight, rises high-temperature to 60-70 DEG C, and insulation is stirred
Mix 10-15 minutes, add above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid；
（2）Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 50-70 times of compound weight, be made suspension；
（3）Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 170-200 times of its weight, stirred, be sent to
In 50-60 DEG C of water-bath, insulated and stirred 14-20 minutes, discharging added above-mentioned suspension, and ultrasonic 20-30 minutes, filtering will be heavy
Form sediment and be vacuum dried 1-2 hours at 50-60 DEG C, obtain acidifying carbon dust
（4）Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, gamma-rays is passed through and is processed 10-15 minutes, drying
And molten condition is heated to, and knead 30-45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.
Advantages of the present invention is：
PTC electricity heating composites prepared by the present invention, can occur double using two kinds of polymer as matrix, in course of reaction
Percolation, improves the reappearance of material resistance；Processed using gamma-rays during being mixed with so that complex
The NTC effects of system are substantially reduced, and also improve thermal cycle and the electro-thermal equilibrium temperature reappearance of system；Add 2,4,6- tri-
Tert-butyl phenol so that composite be electrified for a long time stability and break-make electrical stability is improved repeatedly, and 2,4,6-
Tri-butyl-phenol also serves the effect of lubricious polymeric thing in process；.
Specific embodiment
The following is embodiments of the invention one.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts：Ethyl vinyl acetate second
Alkene copolymer 60, low density polyethylene (LDPE) 80, graphite 20, p-methyl benzenesulfonic acid 1.5,2,4,6- tri-butyl-phenols 0.7, vermiculite power 7,
Polypropylene nucleater 1, Silane coupling agent KH550 3, anti-scorching agent CTP 0.3, aluminium nitride 20, antioxidant 1010 0.7, bentonite
23rd, DMF 0.7.
The following is embodiments of the invention two.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts：Ethyl vinyl acetate second
Alkene copolymer 65, low density polyethylene (LDPE) 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6- tri-butyl-phenols 0.8, vermiculite power 8,
Polypropylene nucleater 1.1, Silane coupling agent KH550 4, anti-scorching agent CTP 0.4, aluminium nitride 23, antioxidant 1010 0.9, swelling
Soil 27, DMF 1.3.
The following is embodiments of the invention three.
A kind of high molecular PTC electricity heating composite, it is made up of the raw material of following weight parts：Ethyl vinyl acetate second
It is alkene copolymer 70, low density polyethylene (LDPE) 90, graphite 30, p-methyl benzenesulfonic acid 1.8,2,4,6- tri-butyl-phenols 1, vermiculite power 9, poly-
Propylene nucleator 1.2, Silane coupling agent KH550 5, anti-scorching agent CTP 0.5, aluminium nitride 30, antioxidant 1010 1, bentonite 30,
DMF 2.
A kind of preparation method of high molecular PTC electricity heating composite as claimed in claim 1, comprises the following steps：
（1）Above-mentioned bentonite is calcined 2 hours at 670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- dimethyl methyls
Acid amides is sufficiently mixed, and is added in the distilled water of 65 times of compound weight, rises high-temperature to 65 DEG C, insulated and stirred 15 minutes, plus
Enter above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid；
（2）Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 55 times of compound weight, be made suspension；
（3）Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 180 times of its weight, stirred, be sent to 55 DEG C
In water-bath, insulated and stirred 17 minutes, discharging adds above-mentioned suspension, ultrasound 25 minutes, filtering, vacuum at being deposited in 55 DEG C
Dry 1 hour, obtain acidifying carbon dust；
（4）Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, and is passed through gamma-rays treatment 15 minutes, then
Molten condition is dried and be heated to, then is kneaded 45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.
Claims (3)
1. a kind of high molecular PTC electricity heating composite, it is characterised in that it is made up of the raw material of following weight parts：Second
Alkene-acetate ethylene copolymer 60-70, low density polyethylene (LDPE) 80-90, graphite 20-30, p-methyl benzenesulfonic acid 1.5-1.8,2,4,6- tri-
Tert-butyl phenol 0.7-1, vermiculite power 7-9, polypropylene nucleater 1-1.2, Silane coupling agent KH550 3-5, anti-scorching agent CTP
0.3-0.5, aluminium nitride 20-30, antioxidant 1010 0.7-1, bentonite 23-30, DMF 0.7-2.
2. high molecular PTC according to claim 1 electricity heating composite, it is characterised in that it is by following weight parts
Raw material composition：Ethylene-vinyl acetate copolymer 65, low density polyethylene (LDPE) 85, graphite 26, p-methyl benzenesulfonic acid 1.7,2,4,6-
Tri-butyl-phenol 0.8, vermiculite power 8, polypropylene nucleater 1.1, Silane coupling agent KH550 4, anti-scorching agent CTP 0.4, nitridation
Aluminium 23, antioxidant 1010 0.9, bentonite 27, DMF 1.3.
3. a kind of preparation method of high molecular PTC as claimed in claim 1 electricity heating composite, it is characterised in that including
Following steps：
（1）Above-mentioned bentonite is calcined 1-2 hours at 600-670 DEG C, normal temperature is cooled to, fine powder is worn into, with above-mentioned N, N- bis-
NMF is sufficiently mixed, and is added in the distilled water of 60-70 times of compound weight, rises high-temperature to 60-70 DEG C, and insulation is stirred
Mix 10-15 minutes, add above-mentioned vermiculite power, continue to stir to normal temperature, obtain acid amides dispersion liquid；
（2）Above-mentioned graphite, aluminium nitride are mixed, is added in the distilled water of 50-70 times of compound weight, be made suspension；
（3）Above-mentioned p-methyl benzenesulfonic acid will be taken, will be added in the deionized water of 170-200 times of its weight, stirred, be sent to
In 50-60 DEG C of water-bath, insulated and stirred 14-20 minutes, discharging added above-mentioned suspension, and ultrasonic 20-30 minutes, filtering will be heavy
Form sediment and be vacuum dried 1-2 hours at 50-60 DEG C, obtain acidifying carbon dust；
（4）Above-mentioned acid amides dispersion liquid, acidifying carbon dust and remaining each raw material are mixed, gamma-rays is passed through and is processed 10-15 minutes, drying
And molten condition is heated to, and knead 30-45 minutes, extruding pelletization, that is, obtain the PTC electricity heating composite.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559158A (en) * | 2018-05-10 | 2018-09-21 | 重庆新康意安得达尔新材料有限公司 | A kind of low-density polymer composite |
| CN108877993A (en) * | 2018-05-24 | 2018-11-23 | 江苏时瑞电子科技有限公司 | A kind of High-strength PTC polymer conductive material and preparation method thereof |
| CN111403665A (en) * | 2020-03-25 | 2020-07-10 | 石狮申泰新材料科技有限公司 | Ceramic-coated lithium battery diaphragm and preparation method thereof |
| CN115403852A (en) * | 2022-11-03 | 2022-11-29 | 山东寿光鲁清石化有限公司 | Preparation method of conductive polyethylene special material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597396A (en) * | 2009-07-02 | 2009-12-09 | 浙江华源电热有限公司 | Polymer-based positive temperature coefficient thermistor material |
-
2016
- 2016-12-20 CN CN201611181491.XA patent/CN106750794A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597396A (en) * | 2009-07-02 | 2009-12-09 | 浙江华源电热有限公司 | Polymer-based positive temperature coefficient thermistor material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559158A (en) * | 2018-05-10 | 2018-09-21 | 重庆新康意安得达尔新材料有限公司 | A kind of low-density polymer composite |
| CN108877993A (en) * | 2018-05-24 | 2018-11-23 | 江苏时瑞电子科技有限公司 | A kind of High-strength PTC polymer conductive material and preparation method thereof |
| CN111403665A (en) * | 2020-03-25 | 2020-07-10 | 石狮申泰新材料科技有限公司 | Ceramic-coated lithium battery diaphragm and preparation method thereof |
| CN115403852A (en) * | 2022-11-03 | 2022-11-29 | 山东寿光鲁清石化有限公司 | Preparation method of conductive polyethylene special material |
| CN115403852B (en) * | 2022-11-03 | 2023-01-06 | 山东寿光鲁清石化有限公司 | Preparation method of conductive polyethylene special material |
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Application publication date: 20170531 |